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ke here ? —If you ____, choose a seat in the smoking ②John, look at the you play the piano at such a late hour? A.MustB.CanC.MayD.Need 【解析】must在這兩道試題中均表示“非得,偏要”。【答案】① D② A (1)should應(yīng)該,表示“責(zé)任和義務(wù)”。例如:According to the air traffic rules, you ___ switch off your mobile phone before 【解析】should此處表示根據(jù)交通法規(guī)應(yīng)盡的責(zé)任和義務(wù)。【答案】D(2)在虛擬條件句中用以加強假設(shè)語氣,表示“與將來事實相反的假設(shè)”,用 If+主語+ should +動詞原形,當(dāng)“萬一(會)”講。這時可省略if,將should提到句首,變?yōu)榈寡b句式。請看下面的例子:If it should rain(=Should it rain)tomorrow, I would stay at ,我就待在家里。再如:________ fired, your health care and other benefits will not be immediately cut you be you be you be you be 【解析】句意:萬一你被解雇,給你的醫(yī)療救助和其它方面的福利也不會被取消?!敬鸢浮緽(3)should還可以用來表示說話人對某事不能理解、趕到意外、驚異等意思,譯為“竟然,竟會”。例如:You can’t imagine that a wellbehaved gentleman _____ be so rude to a 【解析】句意:你想象不到這么一個表現(xiàn)良好的紳士竟然會對一個女士這么粗魯?!敬鸢浮緾 (1)shall用于第一和第三人稱,常用于疑問句中,用來征求對方意見。例如: ①—What’s the name? — I spell it for you? 【答案】A(2)用于第二和第三人稱,表示“命令、威脅、警告、允諾、”等。例如: —Excuse I want to use your puter to type a report.—You _____have my puter if you don’t take care of ’t not’t’t 【解析】shall此處表示“警告”?!敬鸢浮緼(3)shall也用于宣布法律、規(guī)定的要求。例如: ①—What does the sign over there read? —“No person ________ smoke or carry a lighted cigarette,cigar or pipe in this area.” 【解析】禁止吸煙是此處的規(guī)定?!敬鸢浮緾 (1)can可以用來表示驚異、懷疑、不相信的態(tài)度,主要用于否定句、疑問句或感嘆句中。例如:How ______ you say that you really understand the whole story if you have only covered only part of the article? 【答案】A(2)can也可以用來表示請求或許可。例如: —Mum, I’ve been studying English since 8 o’ go out and play with Tom for a while? —No, I’m afraid , it’s raining outside ’t’t’t 【答案】A(3)can可以表達一般的或永久的能力。be able to也可表達能力,但常用來表達在某件事情中所表現(xiàn)出來的能力,尤指克服困難能夠完成某事。例如: ①If it were not for the fact that she ______ sing, I would invite her to the ’t’t’t not ②The fire spread through the hotel very quickly but everyone ______ get to able to 【答案】C (1)will與would可表示“意愿;意志 ”。例如: John promised his doctor he _____ not smoke and he has never smoked ever 【解析】根據(jù)promise可知此處是John向醫(yī)生表明自己的意志?!敬鸢浮緿(2)would表示過去傾向性或習(xí)慣性的動作。used to 也有這一用法,但used to即可用來表達過去的習(xí)慣性的動作,也可用來表示過去的狀態(tài)。例如:① When he was there, he ___ go to that coffee shop at the corner after work every better ② In my opinion, life in the twentyfirst century is much easier than used to be is used to was used to used to be 【解析】第一題would指過去習(xí)慣性的動作;第二題it 替代life, used to be 指過去的樣子?!敬鸢浮緼 D第三篇:情態(tài)動詞教案情態(tài)動詞【考綱解讀】情態(tài)動詞與虛擬語氣有千絲萬縷的聯(lián)系,它們往往放在一起考查。在近年高考題中,對情態(tài)動詞的考查幾乎每年都有縱觀近幾年的高考題可以看出,高考對情態(tài)動詞的考查熱點依次是:(1)推測和可能性;(2)“情態(tài)動詞+have done”結(jié)構(gòu)表示猜測或表示虛擬語氣;(3)shall, should, can, must表示特定語氣。尤其是對“情態(tài)動詞+have done”結(jié)構(gòu)的考查頻率較高。試題的情景設(shè)置往往生動、真實,但考查的角度趨于細微化和綜合化,有效信息較為隱蔽,這就決定了情態(tài)動詞題是難題之一。情態(tài)動詞題每年都考,所以本專題在高考中的重要地位是顯而易見的。因而在復(fù)習(xí)中應(yīng)引起高度重視,且依筆者之見,來年高考中對情態(tài)動詞考查的可能性依然非常大?!局R要點】一、情態(tài)動詞的語法特征,只表示期待或估計某事的發(fā)生。 除ought 和have 外,后面只能接不帶to 的不定式。、數(shù)的變化,即情態(tài)動詞第三人稱單數(shù)不加s。,即沒有不定式,分詞等形式。二、情態(tài)動詞的基本用法 和be able to 1)can could 表示能力;可能(過去時用could),只用于現(xiàn)在時和過去時(could)。be able to可以用于各種時態(tài)。They will be able to tell you the news 。2)只用be able to中情況: 位于助動詞后; 情態(tài)動詞后;表示過去某時刻動作時; 用于句首表示條件;表示成功地做了某事時,只能用was/were able to,不能用could。He was able to flee Europe before the war broke out.=He managed to flee Europe before the war broke ,他就逃離歐洲了。注意:could,在否定,疑問句中表示推測或懷疑。表示提出委婉的請求(注意在回答中不可用could)。—Could I have the television on? —Yes,you can./No,you can’ couldn’t be a bad 。1)表示允許或請求;表示沒有把握的推測;may 放在句首,表示祝愿。May God bless you!愿上帝保佑你!He might be at 。注意:might 表示推測時,不表示時態(tài)。只是可能性比may 小。2)may/might as well,后面接不帶to 的不定式,意為“不妨,還是……好”。You may(might)as well tell me the 。 to和must1)兩詞都是“必須”的意思,have to 表示客觀的需要,must 表示說話人主觀上的看法,即主觀上的必要。My brother was very ill,so I had to call the doctor in the middle of the ,我只得半夜里把醫(yī)生請來。(客觀上需要做這件事)He said that they must work 。(主觀上要做這件事)2)have to有人稱、數(shù)、時態(tài)的變化,而must只有一種形式。He had to look after his sister 。3)在否定結(jié)構(gòu)中:don’t have to 表示“不必”(可以不可以都行);mustn’t表示“禁止” You don’t have to tell him about 。You mustn’t tell him about 。1)must用在肯定句中表示較有把握的推測,意為“一定”。2)must表對現(xiàn)在的狀態(tài)或現(xiàn)在正發(fā)生的事情的推測時,must 后面通常接系動詞be 的原形或行為動詞的進行式。You have worked hard all must be ,一定累了。(對現(xiàn)在情況的推測判斷)He must be working in his 。比較:He must be staying 。He must stay 。3)must 表示對已發(fā)生的事情的推測時,must 要接完成式。I didn’t hear the must have been ,我想必是睡著了。4)must表示對過去某時正發(fā)生的事情的推測,must 后面要接不定式的完成進行式。—Why didn’t you answer my phone call?—Well,I must have been sleeping,so I didn’t hear )否定推測用can’t。If Tom didn’t leave here until five o’clock,he can’t be home ,他此時一定還未到家。can,could,may,might,must 皆可表示推測,其用法如下: 1)情態(tài)動詞+動詞原形表示對現(xiàn)在或?qū)淼那闆r的推測,此時動詞通常為系動詞。I don’t know where she is,she may be in ,她可能在武漢。2)情態(tài)動詞+動詞現(xiàn)在進行時表示對現(xiàn)在或?qū)碚谶M行的情況進行推測。At this moment,our teacher must be correcting our exam ,我們老師想必在批改試卷。3)情態(tài)動詞+動詞完成時表示對過去情況的推測。We would have finished this work by the end of next 。The road is must have rained last ,昨天晚上一定下雨了。4)情態(tài)動詞+動詞的現(xiàn)在完成進行時表示對過去正在發(fā)生事情的推測。Your mother must have been looking for 。5)推測的否定形式,疑問形式用can’t,couldn’t表示。Mike can’t have found his car,for he came to work by bus this ,因為早上他是坐公共汽車來上班的。注意:could,might表示推測時不表示時態(tài),其推測的程度不如can,may。+have+過去分詞1)may(might)have+done (could)have+done ,推測過去時間里可能發(fā)生的事情。Philip may(might)have been hurt seriously in the car 。2)must have+done ,語氣較強,具有“肯定”“諒必”的意思?!狶inda has gone to work,but her bicycle is still here.—She must have gone by )ought to have done sth./should have done ,而事實上并沒有做。否定句表示“不該做某事而做了”。He ought not to have thrown the old clothes away.(事實上已扔了。)ought to 在語氣上比should 要強。4)needn’t have done I dressed very warmly for the trip,but I needn’t have done weather was ,我穿的非常暖和,但我本沒有必要那么去做。天太熱了。5)would like to have done I would like to have read the article,but I was very busy ,但我那時太忙了。 和ought toshould 和ought to 都為“應(yīng)該”的意思,可用于各種人稱?!狾ught he to go?— think he ought ,命令時,語氣由 should(應(yīng)該),had better最好),must(必須)漸強。 better表示“最好”had better 相當(dāng)于一個助動詞,它只有一種形式,它后面要跟動詞原形。had better do had better not do had better have done ,意為“本來最好”。 rather表示“寧愿” would rather do 寧可干某事would rather not do 寧可不干某事 would rather...than...寧愿……而不愿還有would sooner,had rather,had sooner都表示“寧愿”“寧可”的意思。I would rather stay here than go h